CHNT NB1-63B25 Molded Case Circuit Breaker

CHNT NB1-63B25 molded‑case circuit breaker, part number E218757, is a three‑pole overcurrent protection device rated for 480 V AC. It provides 25 A nominal current (In) with a B‑curve trip characteristic, making it suitable for protecting circuits with moderate inrush such as lighting, control panels, and small motors. The unit offers an interrupting capacity (Icu) of 6 kA, enabling safe interruption of fault currents up to 6,000 A. Built to IEC/EN 60898‑1 standards for low‑voltage circuit breakers, the NB1‑63 family is designed for use in distribution boards and control panels where 3P protection is required. This 3P B25 variant is part of CHNT's NB1‑63 lineup and is intended for installations in 480 V systems, where it can protect three phases in a 3‑phase, 4‑wire configuration. The compact molded‑case design supports straightforward installation in standard enclosures and is compatible with CHNT accessories appropriate for NB1‑63 devices. Ideal for light commercial and industrial applications, this model provides clear current rating for precise circuit protection, distinguishing itself from higher‑current NB1‑63 variants such as B32, B40, or B63 by its 25 A nominal rating while preserving robust 6 kA interrupt capability.